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A gonadotropin-releasing hormone agonist (GnRH agonist) is a type of medication which affects gonadotropins and sex hormones. [1] They are used for a variety of indications including in fertility medicine and to lower sex hormone levels in the treatment of hormone-sensitive cancers such as prostate cancer and breast cancer, certain gynecological disorders like heavy periods and endometriosis ...
Initially it was thought that GnRH agonists could be used as potent and prolonged stimulators of pituitary gonadotropin release, but it was soon recognized that GnRH agonists, after their initial stimulating action – termed a "flare" effect – eventually caused a paradoxical and sustained drop in gonadotropin secretion.
Leuprorelin is a gonadotropin-releasing hormone (GnRH) analogue acting as an agonist at pituitary GnRH receptors. GnRH receptor agonists initially increase the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) by the anterior pituitary and increased serum estradiol and testosterone levels via the hypothalamic ...
[2] [3] It is an injectable gonadotropin releasing hormone agonist (GnRH agonist). Structurally, it is a decapeptide. It is the natural GnRH decapeptide with two substitutions to inhibit rapid degradation. Goserelin stimulates the production of the sex hormones testosterone and estrogen in a non-pulsatile (non-physiological) manner.
It is a decapeptide (pGlu-His-Trp-Ser-Tyr-D-Trp-Leu-Arg-Pro-Gly-NH 2) and a gonadotropin-releasing hormone agonist (GnRH agonist) used as the acetate or pamoate salts. Primary indications include endometriosis, [5] for the reduction of uterine fibroids, to treat prostate cancer, and to treat male hypersexuality with severe sexual deviation. [4]
Nafarelin is a gonadotropin-releasing hormone agonist (GnRH agonist) and works by preventing the production of sex hormones by the gonads. [1] [2] It can lower sex hormone levels by 95% in both sexes. [1] [2] Nafarelin is a peptide and an analogue of GnRH Tooltip gonadotropin-releasing hormone. [8] Nafarelin was introduced for medical use in 1990.
Gonadorelin is an agonist of the GnRH receptor and is used to induce the secretion of the gonadotropins follicle-stimulating hormone and luteinizing hormone from the pituitary gland and to increase sex hormone production by the gonads.
Cetrorelix (INN Tooltip International Nonproprietary Name, BAN Tooltip British Approved Name), or cetrorelix acetate (USAN Tooltip United States Adopted Name, JAN Tooltip Japanese Accepted Name), sold under the brand name Cetrotide, is an injectable gonadotropin-releasing hormone (GnRH) antagonist.